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Finding the Fourth Proportional to 2,334.32, 3,502.02 and 690.80

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Solution

The fourth proportional to 2,334.32, 3,502.02 and 690.80 is: 1,036.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.32 : 3,502.02 = 690.80 : x
  2. Step 2: Convert to fraction form
    2,334.32/3,502.02 = 690.80/x
  3. Step 3: Cross multiply
    2,334.32x = 3,502.02 × 690.80
  4. Step 4: Simplify right side
    2,334.32x = 2,419,195.42
  5. Step 5: Solve for x
    x = 2,419,195.42/2,334.32
  6. Step 6: Final answer
    x = 1,036.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.